Although the writer makes a decent chronological collection of the literature regarding witchcraft, heathenry and heresy since late antiquity to the high middle ages, he takes on a definite critical tendency (of christianity) and seems to want to propose witchcraft as a medieval phenomenon. He proposes that ancienty paganism was transformed into demon worship by the Church (while 1-2th century Church fathers already professed that the gods of the pagans are devils usurping the worship rightly God's), and furthermore that witchcraft was a later development that came from this. I accuse him of dishonesty here because even early on in Jordanes' History of the Goths he says that Huns are mentioned as the offspring of women and incubi. While the original text clearly says hallerune and incubi, hallerune (hell-runes) being witches! And he also leave out a mention by Tacitus about the then-still-heathen Germanics, that a certain tribe casted out several hallerune. Because it doesn't fit in his hypothesis I assume. In fact, witch burning was a pagan practice in antiquity, especially in Germanic lands. And the Church during the early middle ages tried to eradicate this practice.